Yamazaki Mazak Vertical Machining Centers

Mazak NEXUS 6800-II

$200,000 – $350,000 Updated 2026-03-17

Key Specifications

Max Spindle

10,000 RPM

Spindle Taper

CAT 50

Tool Capacity

30 tools standard (60, 120 optional)

Table Size

1,800 x 760 mm (70.9 x 29.9 in)

Spindle Power

22 kW (30 hp) at 25% ED; 15 kW (20 hp) continuous

x axis travel

1,524 mm (60.0 in)

Overview

The Mazak NEXUS 6800-II is a large-format vertical machining center in the NEXUS production lineup, designed for shops that need to machine large parts — long aerospace structural components, large mold cavities, energy sector housings, and heavy plate work — with the reliability and ease of use that characterizes the NEXUS series. The 6800-II steps up significantly from the 510C-II in X-axis travel, table size, and workpiece capacity while retaining the same MAZATROL SmoothG control and NEXUS-II generation thermal improvements.

X-axis travel reaches 1,524 mm (60 in), making the 6800-II suitable for aerospace structural components, long gantry parts, and large mold bases that simply cannot fit on mid-size VMCs. Y-axis travel is 762 mm (30 in) and Z-axis is 660 mm (26 in). The table size is 1,800 x 760 mm (70.9 x 29.9 in) and supports workpieces up to 3,000 kg (6,614 lb). That weight capacity combined with the long table makes the 6800-II appropriate for heavy plate, weldment, and large casting setups.

The standard spindle runs at 10,000 RPM with 22 kW (30 hp) through a CAT 50 taper. The CAT 50 taper combined with the large table is the right combination for shops taking heavy cuts on large steel, iron, and aluminum workpieces. Rapid traverse is 40 m/min in all axes. The standard ATC holds 30 tools in a chain magazine, expandable to 60 or 120 tools for programs requiring more variety.

MAZATROL SmoothG manages programming and control. The -II designation brings the same thermal compensation updates and high-pressure coolant preparation as other NEXUS-II generation machines. The 6800-II competes against the Haas VF-6, DMG Mori NVX 7080, and Okuma GENOS M850-VE, typically offering superior conversational programming and thermal management at a higher price point than the Haas.

Full Specifications

Parameter	Value
X Axis Travel	1,524 mm (60.0 in)
Y Axis Travel	762 mm (30.0 in)
Z Axis Travel	660 mm (26.0 in)
Table Size	1,800 x 760 mm (70.9 x 29.9 in)
Max Workpiece Weight	3,000 kg (6,614 lb)
Max Spindle Speed	10,000 RPM
Spindle Taper	CAT 50
Spindle Motor Power	22 kW (30 hp) at 25% ED; 15 kW (20 hp) continuous
Spindle Torque	350 Nm (258 ft-lb) at 25% ED
Rapid Traverse Xyz	40 m/min (1,575 ipm)
Tool Capacity	30 tools standard (60, 120 optional)
Max Tool Diameter	150 mm (5.9 in)
Max Tool Length	400 mm (15.7 in)
Max Tool Weight	25 kg (55 lb)
Column Type	fixed column
Machine Weight	18,000 kg (39,683 lb)
CNC Control	MAZATROL SmoothG CNC
Modelnexus Hcn 6800iibrandmazaktypehorizontal Machining Centerscontrolcontact Sales Rep	Contact Sales Rep.
Modelnexus Hcn 6800iibrandmazaktypehorizontal Machining Centerscontrol	Contact Sales Rep.
Model	NEXUS HCN-6800II
Brand	MAZAK
Type	Horizontal Machining Centers
X4134y3543z3858power50 Hprpm8000 Rpm	# ATC60Pallet-W24.8"Pallet-L24.8"Taper50ControlCNC (MAZTROL MATRIX)
X	41.34"
Y	35.43"
Z	38.58"
Power	50 hp
Rpm	8,000 RPM
Atc	60
Pallet W	24.8"
Pallet L	24.8"
Taper	50
Cnc Control	CNC (MAZTROL MATRIX)
Looking To Purchase A New Mazak Nexus Hcn 6800ii	Contact Sales Rep.

Specifications sourced from machinetools.com — verified 2026-03-28

Strengths & Limitations

Strengths

60-inch X-axis travel accommodates aerospace structural components, long mold bases, and large plate work that most mid-size VMCs cannot handle in a single setup
3,000 kg workpiece capacity handles heavy castings, weldments, and large steel blocks without specialized loading fixtures
CAT 50 taper with 350 Nm torque provides the rigidity and cutting force needed for aggressive face milling and heavy roughing on large workpieces
MAZATROL SmoothG conversational control simplifies setup on large-part one-off and short-run jobs typical of large-VMC work
NEXUS-II thermal compensation maintains accuracy during extended production runs on large parts that take hours to machine
Chain-type ATC with optional 60 or 120 tool positions supports complex programs involving many different tools across a large workpiece

Limitations

10,000 RPM maximum spindle speed limits high-speed finishing on aluminum compared to 15,000–20,000 RPM machining centers better suited for aerospace aluminum structural parts
Fixed column design limits Z-axis accessibility compared to moving-column gantry configurations on similarly-sized competitors
At 18,000 kg and 60-inch X-axis, the 6800-II requires significant floor space and loading crane access for workpiece handling
30-tool standard ATC is insufficient for complex large-part programs; shops should plan on the 60 or 120-tool upgrade from the start
No pallet changer option limits unattended production — workpiece load/unload time is a significant fraction of total cycle time on large parts

Best For

Aerospace structural component manufacturers machining long aluminum wing ribs, spars, and frames that exceed 40-inch X-axis on mid-size VMCs Large mold and die shops machining automotive body panel dies, large injection molds, and mold bases in the 60-inch length range Energy sector manufacturers producing large valve bodies, turbine adapter flanges, and heat exchanger headers in alloy steel Defense manufacturers machining large structural weldments, vehicle armor plates, and oversized structural assemblies Job shops serving heavy industrial customers with large one-off parts that require a large-capacity 3-axis VMC with Mazak conversational programming

Frequently Asked Questions

01 What does a Mazak NEXUS 6800-II cost new?

New pricing typically ranges from $200,000 to $350,000 depending on ATC size, spindle options, and accessories. High-pressure coolant, through-spindle coolant, and 60+ tool magazine upgrades are common additions. Used NEXUS 6800-II machines appear occasionally on the secondary market in the $85,000–$160,000 range.

02 What is the difference between the NEXUS 510C-II and the 6800-II?

The 6800-II steps up to 60-inch X-axis travel (vs 40.2 inches on the 510C-II), a 3,000 kg workpiece capacity (vs 800 kg), a larger 1,800 x 760 mm table, and a CAT 50 taper (vs CAT 40). It is 18,000 kg vs 8,500 kg. The 6800-II is for large-part work; the 510C-II is the more versatile mid-size production machine.

03 Can the 6800-II use through-spindle coolant?

Yes. The NEXUS-II generation machines are prepared for through-spindle coolant, and the high-pressure coolant system is available as an option. Through-spindle coolant is recommended for long-reach boring operations, deep hole drilling, and machining difficult-to-chip materials where flood coolant cannot reach the cutting zone effectively.

04 How does the 6800-II compare to the Haas VF-6?

The Mazak NEXUS 6800-II offers MAZATROL SmoothG conversational programming and superior thermal management compared to the Haas VF-6. The Haas VF-6 typically costs 25–40% less new. For shops where the Mazak conversational programming is valued by operators or where thermal stability on long production runs is critical, the premium is often justified.

05 What is the maximum tool diameter in the ATC?

The standard maximum tool diameter is 150 mm (5.9 in) with adjacent pockets empty. For tools larger than 150 mm, Mazak requires adjacent ATC pockets to be left vacant, reducing the effective tool count. Large face mills and boring heads used on the 6800-II often trigger this adjacent-pocket requirement.